That would be the spec. I'm asking about the actual current full charge capacity. It deteriorates over time.
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Nathan FellmanFeb 13 '11 at 21:24

3

I don't think there's any way to check how much energy is stored in a battery, that's why the charge is measured in percent. You could approximate it by hooking the battery up to something with a constant current draw and timing how long it took to drain, but the phone can't do that. You can gain an even rougher approximation by comparing your current average battery life on one charge to that of when you first got it.
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Matthew Read♦Feb 13 '11 at 21:51

There is an app in the market that claims to do this for HTC phones (search "battery mAh" to find it) so I believe its theoretically possible. I'd guess that instead of actually measuring the enery stored, its making estimates based on the phones specs and actual use. I don't know how accurate it is and I'm pretty sure it would not be accurate on your phone. One problem is that even an estimated battery capacity in mAh is very hardware dependent so you'd need an app specifically for your device and there isn't one at the moment.